## Forum archive 2000-2006

### Eugene (Bud) Boman - Error in problem srw1_4_1.pg

by Arnold Pizer -
Number of replies: 0
 Error in problem srw1_4_1.pg topic started 7/11/2004; 11:05:03 PMlast post 7/12/2004; 11:35:16 AM
 Eugene (Bud) Boman - Error in problem srw1_4_1.pg  7/11/2004; 11:05:03 PM (reads: 923, responses: 3) I think there is a problem with the problem identified in the subject line. It is from the set setAlgebra05RationalExpressions. It is a matching problem -- match this complicated expression with its equivalent simplified form from the list below. In some cases the correct simplified form doesn't seem to be offered. I don't understand the system well enough yet to say for sure if the error is in the problem or in my use of it, but I'd like to understand the difficulty in either case. If you would like to log in to my working WeBWorK site (http://pine.ds.psu.edu/webwork/Math21DS) as practice1 you can find an example of the difficulty in problem set setSection41. In problem #1 I believe option C. should be (x-6)/(x-1) to match part 2. I created the problem set by creating a *.def file as follows: setNumber=setSection41 openDate = 07/06/04, 0600 dueDate = 07/13/04 at 10:00pm answerDate = 07/15/04 at 10:00pm paperHeaderFile = paperSetHeader.pg screenHeaderFile = screenSetHeader.pg problemList = setSection41/srw1_4_1.pg, 1 setSection41/srw1_4_1.pg, 1 setSection41/srw1_4_1.pg, 1 setSection41/srw1_4_1.pg, 1 setSection41/srw1_4_1.pg, 1 setSection41/srw1_4_1.pg, 1 setSection41/srw1_4_1.pg, 1 setSection41/srw1_4_1.pg, 1 setSection41/srw1_4_1.pg, 1 setSection41/srw1_4_1.pg, 1 Any help appreciated. Thanks in advance. -- Bud Boman <| Post or View Comments |>

 Arnold K. Pizer - Re: Error in problem srw1_4_1.pg  7/12/2004; 10:48:44 AM (reads: 1096, responses: 0) Hi Bud, Can you please post the seed that causes this error? If you hit "show editor", the seed will be listed near the top of the page. I see something in the problem that may be causing the error, but having the seed would make it a lot easier to debug. Arnie <| Post or View Comments |>

 Eugene (Bud) Boman - Re: Error in problem srw1_4_1.pg  7/12/2004; 11:13:32 AM (reads: 1091, responses: 0) Sure. I should have thought of that myself. The seed is: 979 -- Bud <| Post or View Comments |>

 Arnold K. Pizer - Re: Error in problem srw1_4_1.pg  7/12/2004; 11:35:16 AM (reads: 1100, responses: 0) Thanks Bud. The problem is corrected in the CVS. You have to replace the first line below by the second. > $questStr6 =EV2( " $$\displaystyle \frac{x^2-t35 x+n35 }{x^2-t15 x+n15 }$$"); <$questStr6 =EV2( " $$\displaystyle \frac{x^2 ?{t35} x ?{n35} }{x^2 ?{t15} x ?{n15} }$$"); Arnie <| Post or View Comments |>